Growth, photosynthetic pigments and photosynthetic activity during seedling stage of cowpea (Vigna unguiculata) in response to UV-B and dimethoate

Evaluation of oxidative stress in Vigna radiata L. in response to chlorpyrifos

“…The absorption and translocation of chlorpyrifos residue by wheat and oil seed rape root has been studied by Wang et al (2007) and it concluded that, the uptake rate of chlorpyrifos residue by these two plants increased with an increase in the amount of chlorpyrifos residue in soil. Parween et al (2011) revealed that the exposure of an organophosphorous insecticide chlorpyrifos proved depressing for nitrogen metabolism and plant growth in Vigna radiata L. Previous studies have demonstrated that dimethoate causes a reduction in plant growth, photosynthetic pigments and photosynthetic activity of Glycine max L. (Panduranga et al 2005) and Vigna unguiculata L. (Mishra et al 2008). Continuous exposure to imadacloprid at higher doses significantly impaired the germination and growth of rice seeds and seedlings (Stevens et al 2008) whereas adverse effects of mancozeb on morphological and anatomical traits of Lens culinaris L. at different developmental stages has been investigated by Bashir et al (2007a, b).…”

“…The blocked growth might have resulted from the inhibition of normal cell division or elongation. Besides, insecticides triggered oxidative stress by producing reactive oxygen species (ROS), e.g., superoxide anion radical (O 2 Á-) and H 2 O 2 (Mishra et al 2008). Insecticide-induced oxidative stress was shown to alter the cellular redox balance by altering ascorbate-glutathione (Asc-Glu) cycle or damaging other antioxidant defense systems (Bashir et al 2007b).…”

Response of African marigold (Tagetes erecta L.) to different concentrations of chlorpyrifos and microbial diversity in root rhizosphere

“…The various cocentrations of profenofos when subjected to Vigna radiata L., the fresh and dry weights were found to incerase upto 0.02% treatments [29]. The reduction of root and shoot length with exposure of highr cocentration of dimethoate, which might be accumulation dimethoate in root as it was directly contacted with pesticide [30]. The authors concluded that the reduction of biomass in wheat plant was affected by affecting the seedling growth, development of shoot and root axis production [31].…”

Effects of enhanced UV-B radiation on growth and photosynthetic responses of four species of seedlings in subalpine forests of the eastern Tibet plateau

“…However, the carotenoids concentration of S. hemsleyi was markedly increased by enhanced UV-B seedlings. Mishra et al (2008) also reported that carotenoids concentration was increased by elevated UV-B radiation to protect the plant against the photodynamic damage.…”